Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 03/07/2023   20:26:54   (   0.00,-104.72) (  -0.23,-105.89)  132.56                80
 03/08/2023   20:10:48   (   0.00,-104.72) (   0.75,-101.35)  384.46                80
 03/10/2023   08:32:36   (  -0.00,-104.72) (   0.40,-106.62)  216.28                80
 03/11/2023   08:11:10   (  -0.00,-104.72) (  -0.59,-102.09)  300.44                80
 03/12/2023   20:33:05   (  -0.00,-104.73) (  -0.60,-107.39)  302.97                80
 03/13/2023   20:17:00   (  -0.00,-104.73) (   0.40,-102.86)  213.74                80
 03/15/2023   08:38:47   (   0.01,-104.73) (   0.74,-108.13)  387.23                80
 03/16/2023   08:17:22   (   0.01,-104.73) (  -0.27,-103.60)  129.08                80
 03/17/2023   20:39:16   (  -0.01,-104.73) (  -0.96,-108.89)  475.18                80
 03/18/2023   20:23:11   (  -0.01,-104.73) (   0.05,-104.36)   41.47                80